JPS63270113A - Two-color molding mold device - Google Patents
Two-color molding mold deviceInfo
- Publication number
- JPS63270113A JPS63270113A JP62107348A JP10734887A JPS63270113A JP S63270113 A JPS63270113 A JP S63270113A JP 62107348 A JP62107348 A JP 62107348A JP 10734887 A JP10734887 A JP 10734887A JP S63270113 A JPS63270113 A JP S63270113A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molding
- cavity
- color
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 52
- 229920005989 resin Polymers 0.000 claims abstract description 85
- 239000011347 resin Substances 0.000 claims abstract description 85
- 238000002347 injection Methods 0.000 abstract description 14
- 239000007924 injection Substances 0.000 abstract description 14
- 238000005266 casting Methods 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010125 resin casting Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0025—Opaque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は二色成形に用いる金型装置に関し、特に不透明
樹脂と透明樹脂の二色成形に用いて好適なものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mold device used for two-color molding, and is particularly suitable for two-color molding of opaque resin and transparent resin.
本発明は二色成形に用いる金型装置において、第一の樹
脂を成形するキャビティを形成する金型に、第二の樹脂
を成形するキャビティに近接した位置に段状部を形成す
ることによシ、この段状部によって第一の樹脂成形側に
対する第二の樹脂の射出圧力を受け、成形品における第
一の樹脂と第二の樹脂の接合部に変形が生じないように
したものである。The present invention is a mold device used for two-color molding, in which a stepped portion is formed in a mold forming a cavity for molding a first resin at a position close to a cavity for molding a second resin. B. This stepped portion receives the injection pressure of the second resin against the first resin molding side, so that deformation does not occur at the joint between the first resin and the second resin in the molded product. .
樹脂成形品において、異なる種類の樹脂を一体に成形す
る際には、先ず金型内に第一の樹脂を射出注入し、その
後第二の樹脂を射出注入してこれら第一の樹脂と第二の
樹脂を一体式成形する、いわゆる二色成形法が広〈実施
されている。In resin molded products, when molding different types of resins together, first the first resin is injected into the mold, and then the second resin is injected to combine the first resin and the second resin. The so-called two-color molding method, in which resins are integrally molded, is widely practiced.
−この二色成形法を用いて成形されるものの一例として
、例えば本出願人が先に提案した「実開昭６０−６００
８３号公報」に記載されるテープカセットについて第７
図〜第１０図を参照して説明する。- As an example of a product molded using this two-color molding method, there is a
About the tape cassette described in "Publication No. 83" No. 7
This will be explained with reference to FIGS.
第７図において（１）はカセット匣体で、このカセット
匣体（１）は上下一対のカセットハーフ（２）を螺子止
め等によって合体して構成されている。このカセットハ
ーフ（２）の本体部（２ａ）は、不透明な熱可塑他樹脂
例えばスチロール樹脂によって形成されている。そして
、このカセットハーフ（２）の本体部（２ａ）の中央部
には透明な熱可塑性樹脂例えばスチロール樹脂により成
る透明窓部（２ｂ）が形成されておシ、この窓部（２ｂ
）を介してカセット匣体（１）内に収納されている磁気
テープ（３）を目視できるようになされている。In FIG. 7, (1) is a cassette case, and this cassette case (1) is constructed by combining a pair of upper and lower cassette halves (2) with screws or the like. The main body (2a) of the cassette half (2) is made of opaque thermoplastic resin, such as styrene resin. A transparent window (2b) made of a transparent thermoplastic resin, such as styrene resin, is formed in the center of the main body (2a) of the cassette half (2).
), the magnetic tape (3) housed in the cassette case (1) can be viewed visually.
このように不透明部と透明部とを一体に有するカセット
ハーフ（２）を射出成形によって製造する場合は、第８
図に示す如き二色成形金型（５）が用いられる。即ち、
この二色成形金型（５）は、上部固定金型（６）と、下
部固定金型（力、及び可動金型（８）とよυ成り、先ず
同図Ａの如く可動金型（８）を前進させた状態でカセッ
トハーフの本体部（２ａ）を成形するキャビティ（９）
を形成し、このキャビティ（９）に樹脂注入ｆ−）（１
Ｇを介して第一の樹脂として不透明な樹脂を射出注入し
てカセットハーフ（２）の本体部（２ａ）を成形しく一
次成形）、その後同図Ｂの如く可動金型（８）を後退移
動させることによシ透明窓部（２ｂ）を成形するキャビ
ティ（ＩＩ）を形成し、このキャビティａυに樹脂注入
ｒ−トａ’ｂを介して第二の樹脂として透明な樹脂を射
出注入して透明窓部（２ｂ）を成形しく二次成形）、こ
の二次成形の際の樹脂の熱と射出圧力とによシカセラト
ノ・−フ（２）の本体部（２ａ）と透明窓部（２ｂ）と
を一体に成形している。When manufacturing the cassette half (2) having the opaque part and the transparent part integrally by injection molding, the eighth
A two-color mold (5) as shown in the figure is used. That is,
This two-color mold (5) consists of an upper fixed mold (6), a lower fixed mold (force), and a movable mold (8). ) is advanced, and the cavity (9) is used to mold the main body (2a) of the cassette half.
is formed, and resin is injected into this cavity (9) f-) (1
Inject an opaque resin as the first resin through G to form the main body (2a) of the cassette half (2) (primary molding), then move the movable mold (8) backward as shown in Figure B. By doing so, a cavity (II) for molding the transparent window portion (2b) is formed, and a transparent resin is injected as a second resin into this cavity via resin injection r-t a'b. The transparent window portion (2b) is formed by secondary molding), and the main body portion (2a) and transparent window portion (2b) of the transparent window portion (2) are formed by the heat and injection pressure of the resin during this secondary molding. It is molded into one piece.
しかしながら、従来のこの二色成形においては、第二の
樹脂の射出の際に、まだ第一の樹脂が完全に固化してい
ないことによシ、この第二の樹脂の射出圧力ａによって
第一の樹脂が押圧されて変形し、このため第一の樹脂と
第二の樹脂との接合部、即ち第１０図に示す如くカセッ
トノ・−フ（２）の透明窓部（２ｂ）の前後縁部に歪み
が生じ、外観的に好ましくない不具合がある。However, in this conventional two-color molding, when the second resin is injected, because the first resin has not yet completely solidified, the injection pressure a of the second resin increases the first resin. The resin is pressed and deformed, and as a result, the joint between the first resin and the second resin, that is, the front and rear edges of the transparent window (2b) of the cassette nozzle (2) as shown in FIG. Distortion occurs in the parts, resulting in an unfavorable appearance.
本発明は斯る点に鑑みてなされたもので、二色成形金型
装置に新規の改良を加え、第一の樹脂と第二の樹脂の接
合部に変形のない成形品を得ることを目的とする。The present invention has been made in view of the above, and aims to provide a molded product with no deformation at the joint between the first resin and the second resin by adding a new improvement to the two-color molding device. shall be.
本発明は上述の目的を達成するために、第一の樹脂、即
ち一色目の樹脂を射出注入し続いて第二の樹脂、即ち二
色口の樹脂を射出注入して成形を行う二色成形金型装置
において、−色目の樹脂を成形するキャビティを形成す
る金型に、二色口の樹脂を成形するキャビティに近接し
た位置に段状部としての凸状リブを設けて成るものであ
る。In order to achieve the above object, the present invention provides two-color molding in which a first resin, that is, a first-color resin is injected, and then a second resin, that is, a two-color resin is injected and molded. In the mold apparatus, a convex rib as a stepped portion is provided in a mold forming a cavity for molding a -color resin at a position close to a cavity for molding a two-color resin.
このように凸状リゾを設けたことによシ、二色口の樹脂
を射出する際にその射出圧力が一色目の樹脂成形側に対
して凸状リブによって受けられる状態となり、このため
−色目の樹脂と二色口の樹脂の接合部に変形が生じるこ
とはなく、外観性の優れた成形品を提供することができ
る。By providing the convex ribs in this way, when injecting the resin of the two-color mouth, the injection pressure is received by the convex rib against the resin molding side of the first color. There is no deformation at the joint between the resin of the mold and the resin of the dichroic mouth, and a molded product with excellent appearance can be provided.
以下、第１図〜第６図を参照しながら本発明の二色成形
金型の実施例について説明するに、上述した第７図〜第
１０図の従来例と対応する部分には同一符号を付しその
説明は省略する。Hereinafter, an embodiment of the two-color molding mold of the present invention will be described with reference to FIGS. 1 to 6. Parts corresponding to the conventional example shown in FIGS. 7 to 10 described above are designated by the same reference numerals. The explanation thereof will be omitted.
尚、本例においても、上述の従来例と同様にテープカセ
ットのカセットハーフ（２）を成形する場合について説
明する。In this example as well, a case will be described in which a cassette half (2) of a tape cassette is molded in the same way as in the above-mentioned conventional example.
本発明の二色成形金型（５）は第一の樹脂、即ち一色目
の樹脂を成形するキャビティを形成する金型に、第二の
樹脂即ち二色口の樹脂を成形するキャビティに近接した
位置に変形防止用の段状部として凸状リブを設けて成る
ものである。即ち、本例では第１図に示す如くカセット
ハーフの本体部（２ａ）を成形するキャビティ（９）を
形成する下部固定金型（７）Ｉｃ、透明窓部（２ｂ）を
成形するキャビティ（１１１に近接した位置において凸
状リブ０３を突設しである。この凸状リブａ３は、方形
状の断面形状をなし、本例の金型（５）によって成形さ
れるカセットハーフの透明窓部（２ｂ）の前後縁部に沿
うように所定長さで複数箇所（本例では８ケ所）に設け
られている。The two-color molding mold (5) of the present invention has a mold that forms a cavity for molding a first resin, that is, a first-color resin, and a cavity for molding a second resin, that is, a two-color resin, in close proximity to the mold. A convex rib is provided at the position as a stepped portion to prevent deformation. That is, in this example, as shown in FIG. 1, the lower fixed mold (7) Ic forms the cavity (9) for molding the main body part (2a) of the cassette half, and the cavity (111) molds the transparent window part (2b). A convex rib 03 is provided in a protruding manner at a position close to .The convex rib a3 has a rectangular cross-sectional shape and is similar to the transparent window portion ( They are provided at a plurality of locations (eight locations in this example) along the front and rear edges of 2b) with a predetermined length.
そして、先ず同図Ａの如く可動金型（８）を前進させて
、透明窓部（２ｂ）を成形するキャビティαυを塞いだ
状態で一色目の樹脂としての不透明な樹脂を樹脂注入ｆ
−）αＣを介してキャビティ（９）に射出注入してカセ
ットハーフの本体部（２ａ）を成形し、その後続いて同
図Ｂの如く可動金型（８）を後退移動させて透明窓部（
２ａ）を成形するキャビティαυを形成し、このキャビ
ティａυにゲートａ３を介して二色目の樹脂としての透
明な樹脂を射出注入して透明窓部（２ｂ）を成形する。First, the movable mold (8) is moved forward as shown in A in the same figure, and an opaque resin is injected as the first color resin while the cavity αυ for molding the transparent window part (2b) is closed.
-) The main body (2a) of the cassette half is molded by injection into the cavity (9) through αC, and then the movable mold (8) is moved backward as shown in FIG.
A cavity αυ for molding 2a) is formed, and a transparent resin as a second color resin is injected into the cavity aυ through a gate a3 to mold a transparent window part (2b).
このとき、カセットハーフの本体部（２ａ）を形成する
一色目の樹脂には、二色目の樹脂の射出圧力ａが加わる
ことになるが、この射出圧力ａは凸状リブαＪによって
受けられる状態となシ（第２図参照）、このため−色目
の樹脂と二色目の樹脂との接合部には殆ど変形が生じる
ことはなく、従って成形されたカセットハーフ（２）は
透明窓部（２ａ）の縁部が歪むことなく良好な外観に仕
上る。At this time, the injection pressure a of the second color resin is applied to the first color resin forming the main body part (2a) of the cassette half, but this injection pressure a is in a state where it is received by the convex rib αJ. Therefore, there is almost no deformation at the joint between the colored resin and the second colored resin, and therefore the molded cassette half (2) has a transparent window part (2a). A good appearance is achieved without distorting the edges.
そして、このようにしてカセットハーフ（２）を成形し
た後、上下の固定金型（６）と（力を開いてカセットハ
ーフ（２）を取出すことにより、透明窓部（２ａ）を一
体に有するカセットハーフ（２）の成形品が得られる。After the cassette half (2) is molded in this way, the upper and lower fixed molds (6) and (by releasing the force and taking out the cassette half (2), the transparent window part (2a) is formed integrally with the upper and lower fixed molds (6). A molded product of the cassette half (2) is obtained.
尚、この成形されたカセットハーフ（２）には、本体部
（２ａ）の裏面側に、凸状リブ（１３１に対応した凹状
の跡部α４が形成されることになるが、この凹状の跡部
０４はカセットハーフ（２）の裏面側に形成されるため
Ｋ、テープカセットの組立後の外観性には何ら問題とな
ることはなく、また内部に収納されるテープに干渉する
ことはない。また、この凹状跡部ａ４は、カセットハー
フの反シを防止するリブとして作用する効果もある。In addition, in this molded cassette half (2), a concave trace part α4 corresponding to the convex rib (131) is formed on the back side of the main body part (2a), but this concave trace part 04 Since it is formed on the back side of the cassette half (2), there will be no problem with the appearance of the tape cassette after assembly, and it will not interfere with the tape stored inside. This concave trace portion a4 also has the effect of acting as a rib to prevent the cassette half from curling.
以上の如く本例の二色成形金型（５）によれば、カセッ
トハーフの本体部（２ａ）を成形するキャビティ（９）
を形成する下部固定金型（７）Ｋ、透明窓部（２ｂ）を
形成する二色目の樹脂の射出圧力を受ける凸状リブ（Ｉ
３１を設けたことにより、カセットハーフ（２）の透明
窓部（２ｂ）の縁部の変形を防止することができるので
、カセットハーフ（２）の寸法精度が向上し、デザイン
的イメージを向上させることができ、また成形作業にお
いて二色目の樹脂の射出圧力に細かい配慮を必要としま
いので成形条件の範囲が広がり、従って成形作業性が良
好となる。しかも構成が極めて簡単であるため金型の製
作コストは従来とさほど変わらず、実施が容易である等
、徨々の実用的効果を有する。As described above, according to the two-color molding mold (5) of this example, the cavity (9) for molding the main body (2a) of the cassette half
The lower fixed mold (7) K forms the transparent window part (2b), and the convex rib (I
31 prevents the edge of the transparent window (2b) of the cassette half (2) from deforming, improving the dimensional accuracy of the cassette half (2) and improving the design image. Moreover, in the molding operation, careful consideration is required for the injection pressure of the second color resin, so the range of molding conditions is widened, and therefore the molding workability is improved. Moreover, since the structure is extremely simple, the production cost of the mold is not much different from that of the conventional method, and it is easy to implement, which has many practical effects.
尚、以上の第１図〜第３図の実施例においては、凸状リ
ブａ３は断面方形状に形成しであるが、第４図に示す如
く凸状リブＱ３＋を断面三角形状に形成してもよい。こ
の場合、凸状リブαＪは二色目の樹脂の射出圧力を受け
る側を垂直面とし、他側を傾斜面とするように形成する
。この第４図の実施例の場合は、凸状リブａ３の傾斜面
部が抜き勾配として作用するので、成形後カセットノ・
−７（２）を金型（５）から取出し易いという利点があ
る。In the embodiments shown in FIGS. 1 to 3 above, the convex rib a3 is formed to have a rectangular cross section, but as shown in FIG. 4, the convex rib Q3+ is formed to have a triangular cross section. Good too. In this case, the convex rib αJ is formed so that the side receiving the injection pressure of the second color resin is a vertical surface, and the other side is an inclined surface. In the case of the embodiment shown in FIG. 4, the inclined surface of the convex rib a3 acts as a draft, so that the cassette can be opened after molding.
-7 (2) has the advantage of being easy to take out from the mold (5).
また、第１図〜第３図の実施例においては、凸状リブ（
１３１を所定長さで複数箇所に形成した場合について説
明したが、これに限ることなく金型（５）Ｋ前述し九凸
状リブａＪを連続した形状に形成してもよい。即ちこの
金型（５）で成形されたカセットノ・−７（２）を第５
図及び第６図に示しであるが、このカセットハーフ（２
）Ｋは金型（５）の連続凸状リブによる凹状跡部α４が
連続して形成されることになる。In addition, in the embodiments shown in FIGS. 1 to 3, the convex rib (
Although a case has been described in which the ribs 131 are formed with a predetermined length at a plurality of locations, the present invention is not limited to this, and the nine convex ribs aJ described above in the mold (5) K may be formed in a continuous shape. That is, the cassette No.-7 (2) molded with this mold (5) is
As shown in Fig. 6 and Fig. 6, this cassette half (2
)K means that a concave trace portion α4 is continuously formed by the continuous convex rib of the mold (5).
さらに、この凸状リブα３に代えて、例えば凸状ぎンを
所定間隔で並設して変形防止用段状部としてもよい。Further, instead of the convex rib α3, for example, convex ribs may be arranged in parallel at a predetermined interval to form a deformation-preventing stepped portion.
また、以上の説明では変形防止用段状部として凸状のリ
ブ及びビンを示したが、この段状部を凹状に形成するこ
ともできる。この場合は、凹状部に一色目の樹脂が充填
される状態となり、この凹状部内で一色目の樹脂成形部
は係止される状態になって二色目の樹脂の射出圧力を受
けることになるので、上述の実施例の場合と同様にして
一色目の樹脂と二色目の樹脂との間の変形が防止され、
外観性の優れた成形品を得ることができる。Further, in the above description, a convex rib and a bottle are shown as the deformation-preventing stepped portion, but the stepped portion can also be formed in a concave shape. In this case, the concave part is filled with the first color resin, and the first color resin molded part is locked inside this concave part and receives the injection pressure of the second color resin. , deformation between the first color resin and the second color resin is prevented in the same manner as in the above embodiment,
Molded products with excellent appearance can be obtained.
尚、以上の実施例では、テープカセットのカセットハー
フ（２）の成形に本発明の二色成形金型を用いた例を示
したが、本発明の二色成形金型はテープカセツ）Ｋ限る
ことなく種々の樹脂成形品に適用できるものであること
は勿論である。In addition, in the above embodiment, an example was shown in which the two-color molding mold of the present invention was used to mold the cassette half (2) of the tape cassette, but the two-color molding mold of the present invention is limited to the tape cassette (K). Of course, it can be applied to various resin molded products.
以上の如く本発明の二色成形金型装置は、第一の樹脂を
成形するキャビティを形成する金型に、第二の樹脂を成
形するキャビティに近接した位置に段状部を設けたこと
によシ、第二の樹脂の射出圧力がこの段状部で受けられ
る状態となるので、成形品における第一の樹脂と第二の
樹脂との接合部に変形が生じることはなく、このため外
観性の優れた成形品を得ることができ、特に実施例に示
した如き不透明樹脂と透明樹脂の二色成形に用いて効果
が大きいものである。As described above, the two-color molding device of the present invention is characterized in that the stepped portion is provided in the mold forming the cavity for molding the first resin at a position close to the cavity for molding the second resin. Since the injection pressure of the second resin can be received by this stepped part, there will be no deformation at the joint between the first resin and the second resin in the molded product, and this will improve the appearance. A molded article with excellent properties can be obtained, and the effect is particularly great when used in two-color molding of an opaque resin and a transparent resin as shown in the examples.
第１図は本発明の二色成形金型の断面図で、Ａは一次成
形を行ったときの状態、Ｂは二次成形を行うときの状態
、第２図は本発明の二色成形金型の要部の拡大断面図、
第３図は本発明の二色成形金型によって成形されたカセ
ットハーフの内面図、第４図は凸状リゾの他例を示す要
部の拡大断面図、第５図及び第６図は凸状リブのさらに
他例を説明するカセットハーフの内面図、第７図は二色
成形によって製造されるテープカセットを説明する斜視
図、第８図は従来の二色成形金型の断面図で、Ａは一次
成形を行ったときの状態、Ｂは二次成形を行うときの状
態、第９図は従来の二色成形金型の要部の拡大断面図、
第１０図は従来の二色成形金型によって成形されたカセ
ットハーフの内面図である。
図中、（５）は二色成形金型、（６）は上部固定金型、
（７）は下部固定金型、（８）は可動金型、（９）（Ｉ
ｌｌはキャビティ、（＋３１は凸状リブである。Figure 1 is a sectional view of the two-color molding die of the present invention, A is the state when primary molding is performed, B is the state when secondary molding is performed, and Figure 2 is the two-color molding mold of the present invention. Enlarged cross-sectional view of the main parts of the mold,
FIG. 3 is an inner view of a cassette half molded by the two-color mold of the present invention, FIG. 4 is an enlarged sectional view of the main part showing another example of convex ribs, and FIGS. 5 and 6 are convex FIG. 7 is a perspective view of a tape cassette manufactured by two-color molding, and FIG. 8 is a cross-sectional view of a conventional two-color mold. A shows the state when primary molding is performed, B shows the state when secondary molding is performed, and FIG. 9 is an enlarged sectional view of the main parts of a conventional two-color mold.
FIG. 10 is an inner view of a cassette half molded by a conventional two-color mold. In the figure, (5) is a two-color mold, (6) is an upper fixed mold,
(7) is the lower fixed mold, (8) is the movable mold, (9) (I
ll is a cavity, (+31 is a convex rib.
Claims (1)
を行うようにした二色成形金型装置において、 上記第一の樹脂を成形するキャビティを形成する金型に
、上記第二の樹脂を成形するキャビティに近接した位置
に段状部を設けて成る二色成形金型装置。[Claims] A two-color molding device that performs molding by injecting a first resin and then injecting a second resin, forming a cavity in which the first resin is molded. A two-color mold device comprising a mold provided with a stepped portion at a position close to a cavity in which the second resin is molded.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62107348A JP2513227B2 (en) | 1987-04-30 | 1987-04-30 | Two-color molding die device |
| GB8809761A GB2203984B (en) | 1987-04-30 | 1988-04-25 | Apparatus for double injection molding |
| KR1019880004828A KR880012332A (en) | 1987-04-30 | 1988-04-28 | 2-color molding machine |
| IT47897/88A IT1219561B (en) | 1987-04-30 | 1988-04-29 | DOUBLE INJECTION MOLDING DEVICE |
| FR8805823A FR2614574A1 (en) | 1987-04-30 | 1988-04-29 | DOUBLE INJECTION MOLDING DEVICE, IN PARTICULAR OF AN OPAQUE RESIN AND A TRANSPARENT RESIN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62107348A JP2513227B2 (en) | 1987-04-30 | 1987-04-30 | Two-color molding die device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63270113A true JPS63270113A (en) | 1988-11-08 |
| JP2513227B2 JP2513227B2 (en) | 1996-07-03 |
Family
ID=14456777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62107348A Expired - Lifetime JP2513227B2 (en) | 1987-04-30 | 1987-04-30 | Two-color molding die device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2513227B2 (en) |
| KR (1) | KR880012332A (en) |
| FR (1) | FR2614574A1 (en) |
| GB (1) | GB2203984B (en) |
| IT (1) | IT1219561B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01145422U (en) * | 1988-03-29 | 1989-10-05 | ||
| JP2007521991A (en) * | 2004-02-02 | 2007-08-09 | ザ プロクター アンド ギャンブル カンパニー | Preform made of two or more materials and method of obtaining the same |
| JP2021094729A (en) * | 2019-12-16 | 2021-06-24 | 株式会社小糸製作所 | Two-color molded article and two-color molding method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2815046B2 (en) * | 1987-06-19 | 1998-10-27 | ミノルタ株式会社 | Molded member and method of joining the same |
| JPH0686080B2 (en) * | 1988-12-02 | 1994-11-02 | 富士写真フイルム株式会社 | Injection mold |
| DE3932016A1 (en) * | 1989-09-26 | 1991-04-11 | Agfa Gevaert Ag | DEVICE FOR TWO-LAYER INJECTION MOLDING |
| JP2887832B2 (en) * | 1994-04-15 | 1999-05-10 | 株式会社ニフコ | Speaker grill and molding method thereof |
| DE19736082C1 (en) * | 1997-08-20 | 1999-01-14 | Orga Kartensysteme Gmbh | Method and manufacture of a chip card and device for carrying out the method |
| DE19808145A1 (en) * | 1997-08-21 | 1999-02-25 | Structoform Spritzgiesen Aniso | Injection moulding of articles with two components |
| KR100419101B1 (en) * | 2001-02-15 | 2004-02-19 | 전성도 | Forming device for wallboard of vehicle |
| EP1568460A1 (en) | 2004-02-24 | 2005-08-31 | Mold-Masters Limited | Multiple-material injection molding |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB814337A (en) * | 1956-01-21 | 1959-06-03 | Roberto Pietrocola | A method for the manufacture of composite footwear soles and in particular of soles for shoes and sandals |
| JPS59133029A (en) * | 1983-01-19 | 1984-07-31 | Matsushita Electric Ind Co Ltd | Resin molding and manufacture thereof |
| JPS61108519A (en) * | 1984-11-02 | 1986-05-27 | Yoshida Kogyo Kk <Ykk> | Molding method of multi-color synthetic resin molded part, molding equipment and molded part thereof |
| JPH0657417B2 (en) * | 1985-11-15 | 1994-08-03 | ティーディーケイ株式会社 | Molding die |
| JP3241453B2 (en) * | 1992-09-25 | 2001-12-25 | 豊田工機株式会社 | Grinding method |
-
1987
- 1987-04-30 JP JP62107348A patent/JP2513227B2/en not_active Expired - Lifetime
-
1988
- 1988-04-25 GB GB8809761A patent/GB2203984B/en not_active Expired - Lifetime
- 1988-04-28 KR KR1019880004828A patent/KR880012332A/en not_active Application Discontinuation
- 1988-04-29 FR FR8805823A patent/FR2614574A1/en active Pending
- 1988-04-29 IT IT47897/88A patent/IT1219561B/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01145422U (en) * | 1988-03-29 | 1989-10-05 | ||
| JP2007521991A (en) * | 2004-02-02 | 2007-08-09 | ザ プロクター アンド ギャンブル カンパニー | Preform made of two or more materials and method of obtaining the same |
| JP2021094729A (en) * | 2019-12-16 | 2021-06-24 | 株式会社小糸製作所 | Two-color molded article and two-color molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2203984B (en) | 1990-05-30 |
| IT1219561B (en) | 1990-05-18 |
| JP2513227B2 (en) | 1996-07-03 |
| FR2614574A1 (en) | 1988-11-04 |
| GB2203984A (en) | 1988-11-02 |
| GB8809761D0 (en) | 1988-06-02 |
| KR880012332A (en) | 1988-11-26 |
| IT8847897A0 (en) | 1988-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |